SLC22A12 and Fanconi renotubular syndrome: We performed comprehensive genetic analysis, including that for SLC22A12 encoding URAT1 and SLC2A9 encoding GLUT9, which are genes causing RHUC, and SLC34A1, EHHADH, HNF4A, and SLC2A2, which are genes causing Fanconi syndrome; however, the results could not identify the responsible mutation.